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If the mass percentage composition of a compound is 72.1% mn and 27.9% o, its empirical formula is
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The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms
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If the mass percentage composition of a compound is 72.1% mn and 27.9% o, its empirical formula is...
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